[Lifetime Warranty] 20-inch Chainsaw Chain 3/8" LP Pitch 0.050" Gauge 72 Drive Links - Compatible with Stihl MS029 036 039 391 310 311 Husqvarna 455 Rancher 460 55 257 261 359 362XP 272XP 555455 H80 | Pack of 3
Three 20-inch chainsaw chains with 3/8 inch LP pitch, 0.050 gauge, and 72 drive links in BlueStars retail packaging.
Infographic showing 20-inch chainsaw chain specifications including 3/8 inch LP pitch, 0.050 gauge, and 72 drive links.
Diagram showing chainsaw chain components including tie strap, rivet, cutter, drive link, and pitch measurement.
Infographic showing 20-inch chainsaw chain features including stainless steel, hardened rivets, and chrome-plated cutters.
20-inch chainsaw chain with semi-chisel design for lower kickback and reduced vibration.
Compatibility chart for 20-inch chainsaw chain with 3/8-inch pitch and 0.050-inch gauge.
Step-by-step installation guide for 20-inch chainsaw chain replacement on compatible chainsaw models.
Close-up of 20-inch chainsaw chain with 3/8-inch pitch and 0.050-inch gauge, featuring BlueStars brand benefits graphic.
Man using a chainsaw with a 20-inch 3/8" pitch 0.050 gauge replacement chain installed.
Three 20-inch chainsaw chains with 3/8 inch LP pitch, 0.050 gauge, and 72 drive links in BlueStars retail packaging.
Infographic showing 20-inch chainsaw chain specifications including 3/8 inch LP pitch, 0.050 gauge, and 72 drive links.
Diagram showing chainsaw chain components including tie strap, rivet, cutter, drive link, and pitch measurement.
Infographic showing 20-inch chainsaw chain features including stainless steel, hardened rivets, and chrome-plated cutters.
20-inch chainsaw chain with semi-chisel design for lower kickback and reduced vibration.
Compatibility chart for 20-inch chainsaw chain with 3/8-inch pitch and 0.050-inch gauge.
Step-by-step installation guide for 20-inch chainsaw chain replacement on compatible chainsaw models.
Close-up of 20-inch chainsaw chain with 3/8-inch pitch and 0.050-inch gauge, featuring BlueStars brand benefits graphic.
Man using a chainsaw with a 20-inch 3/8" pitch 0.050 gauge replacement chain installed.
Lifetime Warranty

[Lifetime Warranty] 20-inch Chainsaw Chain 3/8" LP Pitch 0.050" Gauge 72 Drive Links - Compatible with Stihl MS029 036 039 391 310 311 Husqvarna 455 Rancher 460 55 257 261 359 362XP 272XP 555455 H80 | Pack of 3

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20-inch Chainsaw Chain 3/8" LP Pitch, 0.050" Gauge, 72 Drive Links

Key Features

  • Package Quantity: 3 chains
  • Guide Bar Length: 20 inches
  • Chain Pitch: 3/8" Low Profile (LP)
  • Chain Gauge: 0.050 inches (1.3mm)
  • Drive Link Count: 72
  • Cutter Type: Semi-chisel
  • Design features low-kickback characteristics for safety
  • Constructed from heat-treated, hard-chrome steel for durability

Replaces / Cross-Reference Part Numbers

  • Oregon: 91PX072G, 91VXL072G, S72
  • Husqvarna: H37-72, 581643672
  • Stihl: 63PM3 72, 3636 005 0072
  • Carlton: N1C-BL-72E

Compatibility & Fitment

  • Fits select chainsaw models from brands including Echo, Husqvarna, Poulan, Stihl, and others that require a 20-inch bar.
  • Ensure your chainsaw is specified to use a chain with 3/8" LP pitch, 0.050" gauge, and 72 drive links.
  • Verification: Match the specifications stamped on your guide bar or printed on your old chain to confirm compatibility.

When to Replace

  • Cutters are worn down to the end-of-life indicator line.
  • Chain produces fine sawdust instead of coarse wood chips after sharpening.
  • Visible damage such as broken cutters, cracked tie-straps, or bent drive links.
  • Chain can no longer be correctly tensioned on the guide bar.
  • Saw begins to cut crooked or bind, indicating uneven cutter wear or damage.

Installation Tips

  • Disconnect the spark plug wire before performing any maintenance.
  • Install the chain with cutters on the top of the bar facing forward, toward the bar tip.
  • Tension the chain according to your saw's user manual. A correctly tensioned chain should pull away from the bar slightly and snap back into place.
  • Lubricate the new chain and guide bar thoroughly before first use.
  • Re-check and adjust chain tension after the first few minutes of operation as new chains will stretch.
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  • FIXING SYMPTOMS

    FIXING SYMPTOMS

    Fix the following symptoms: burred/ broken/ bent cutter teeth or drive links, loose chain, dull cutting, uneven cuts, excessive vibration, etc.
  • IDEAL CHOICE

    IDEAL CHOICE

    Offer easy control for homeowners to deal with light-medium work: regular pruning, clean-up after storms and snow, DIY projects & decor,...
  • SAVING SOLUTION

    SAVING SOLUTION

    njoy our great-value package of 3 saw chains to renew your chainsaw anytime - BlueStars brings DIY solutions to help you deal with any trouble.
  • SIMPLE MAINTENANCE

    SIMPLE MAINTENANCE

    Easy to sharpen semi-chisel cutter of 3/8" LP chain with 5/32" round file. Use depth-gauge guide and flat file to maintain depth-gauge height.
SEMI-CHISEL CUTTER & LOW-PROFILE CHAIN

SEMI-CHISEL CUTTER & LOW-PROFILE CHAIN

Allow consistent cuts with lower kickback risk, lower vibration by 35% or more
RUGGED BUILT FOR LONG-LASTING DURABILITY

RUGGED BUILT FOR LONG-LASTING DURABILITY

High-grade Steel material, along with solid Rivets and Chrome layer, reduces wear and chain tension changes
EXCEPTIONAL CHAINSAW PARTS

EXCEPTIONAL CHAINSAW PARTS

Get all woods done perfectly and effortlessly with the support of our chainsaw chains!
Bar Length
20 inches (50cm)
Pitch
3/8" (Full Pitch)
Gauge
.050" (1.3mm)
Drive Links
72
Cutter Type
Semi-Chisel (H80 / D72) — or Full Chisel (E72)
Material
Hardened Chromium Steel
Recommended Engine Size
50–100cc
OEM Part Numbers
Husqvarna H80-72 (531300441 / 501846572 / 591132372) | Oregon D72 / E72 | Stihl 33RS-72
Compatible Models
Husqvarna 55 / 257 / 261 / 359 / 362XP / 272XP / 455 Rancher / 460 Rancher / 3900 Sport / 555455 | Stihl MS029 / MS036 / MS039 / MS290 / MS310 / MS311 / MS391

FAQ

This chain is designed for a 20-inch bar with a 3/8-inch pitch, 0.050-inch gauge, and 72 drive links. Before purchasing, verify these three specifications match your current chain or the markings stamped on your chainsaw's guide bar. If your bar requires a different gauge or drive link count, this chain will not fit correctly.
This chain is compatible with a wide range of models including Stihl MS029, 036, 039, 391, 310, 311, and Husqvarna 455 Rancher, 460, 55, 257, 261, 359, 362XP, 272XP, 555, and 455 H80.
You likely need a new chain if the saw begins to pull to one side while cutting, produces sawdust instead of wood chips, or requires you to apply excessive downward pressure to make a cut. Additionally, if the chain teeth have been sharpened down to the wear indicator marks or if you notice frequent stretching that prevents proper tensioning, it is time for a replacement.
Before installing the new chain, inspect your drive sprocket for signs of deep wear or 'grooving.' A worn sprocket can cause premature wear on a new chain. Also, ensure your guide bar rails are clean, free of burrs, and that the oiler hole is clear so the chain receives proper lubrication during operation.
After installing the chain, tighten the tensioner until the chain is snug against the bottom of the guide bar. Pull the chain along the top of the bar by hand; it should move smoothly with some resistance. You should be able to pull the chain slightly away from the bar, but the drive links should remain engaged in the bar groove. Always double-check the tension after the first few minutes of cutting, as new chains will naturally stretch slightly as they seat.